[U-Boot] [PATCH 3/4] ARM: socfpga: Fully unmap the FPGA bridges from L3 space

[Simon Goldschmidt]

On 17.04.19 22:15, Marek Vasut wrote:
> Instead of just putting the bridges into reset, fully remove the bridges
> from the L3 main bridge space when disabling them by clearing bits in
> NIC-301 remap register. Moreover, only touch the 3 LSbits in brgmodrst
> register as the rest of the bits are undefined.
> 
> Signed-off-by: Marek Vasut <marex at denx.de>
> Cc: Chin Liang See <chin.liang.see at intel.com>
> Cc: Dinh Nguyen <dinguyen at kernel.org>
> Cc: Simon Goldschmidt <simon.k.r.goldschmidt at gmail.com>
> Cc: Tien Fong Chee <tien.fong.chee at intel.com>

Reviewed-by: Simon Goldschmidt <simon.k.r.goldschmidt at gmail.com>

> ---
>   arch/arm/mach-socfpga/reset_manager_gen5.c | 3 ++-
>   1 file changed, 2 insertions(+), 1 deletion(-)
> 
> diff --git a/arch/arm/mach-socfpga/reset_manager_gen5.c b/arch/arm/mach-socfpga/reset_manager_gen5.c
> index 66af924485..89a384b59c 100644
> --- a/arch/arm/mach-socfpga/reset_manager_gen5.c
> +++ b/arch/arm/mach-socfpga/reset_manager_gen5.c
> @@ -103,7 +103,8 @@ void socfpga_bridges_reset(int enable)
>   
>   	if (enable) {
>   		/* brdmodrst */
> -		writel(0xffffffff, &reset_manager_base->brg_mod_reset);
> +		writel(0x7, &reset_manager_base->brg_mod_reset);
> +		writel(L3REGS_REMAP_OCRAM_MASK, SOCFPGA_L3REGS_ADDRESS);
>   	} else {
>   		socfpga_bridges_set_handoff_regs(false, false, false);
>   
>